'lmao' is an Internet slang, meaning laughing my ass off. It is not considered an 'official' word, and can be associated with the words 'lol' and 'rofl'. It is generally known as a stronger version of 'laughing out loud'
by Helen of Troye September 08, 2016
A 1-10 scale is generally used to rate a person, object, et cetera. This is used to express one's opinion about something in the scale of one to ten.
by Helen of Troye September 08, 2016